"We're out of control!" "HELP!"
Phew! Sense at last.
Try calling ATC while actively dealing with a full-on emergency in the simulator and you'll be strictly admonished (b....cked) by the examiner as a matter of course. And rightly so.
And when in the dwang for real, "Mayday" means "m'aidez" = "help me". What help can ATC offer?
Answers on a postcard.......
(When in control having addressed the emergency, and with time allowing, once the actions have been performed, then it is time to let ATC know what you are up to)